A const with infinitely-changing types pointing to a self-referential static causes compiler hang.

This issue is a variant of #144719, but this issue doesn't involve patterns.

Compiling the following code causes the compiler to hang.

use std::marker::PhantomData;

#[repr(transparent)]
struct Generic<T: 'static>(&'static Generic<Option<T>>, PhantomData<T>);

#[repr(transparent)]
struct Concrete(&'static Concrete);

static X: Concrete = Concrete(&X);

const Y: &Generic<i32> = unsafe { &*(&raw const X).cast() };

fn main() {}

cc @RalfJung

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Reproducible on the playground with version 1.98.0-nightly (2026-06-28 df6ee909ef35c75aa58a)

Start by compiling the self-contained reproducer from the issue on the reported Rust nightly version and confirm the compiler hang. No repository file or test is named; done means the compiler no longer hangs when processing this const and self-referential static pattern.